Cultivator.



No. 7|s,4|2. Patented Dec. 23,1902. E. HAIMAN.

GULTIVATOR.

Application filed July 22, 1901.)

(No Model.)

Ari-E51 INVENTUE A1- TY lhuiTnn STATES PATENT OFFICE.

ELIAS HAIMAN, OF CLEVELAND, OHIO.

CULTIVATOR.

SPECIFICATION forming part of Letters Patent N 0. 716,412, dated December 23, 1902.

Application filed July 22, 1901. Serial No. 69,239. (No model.)

T0 all whom it may concern.-

Be it known that I, ELIAS HAIMAN, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Cultivators; and I do declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

Myinvention relates to improvements in cultivators; and the invention comprises especiallya novel construction of what is known as the hinge or hinge-plates, which are fixed to the central beam or bar of the cultivator and have the side beams or bars pivotally connected therewith at their ends, all as hereinafter fully described, and particularly pointed out in the claims.

In the accompanying drawings, Figure l is a plan view of a cultivator embodying my invention. Fig. 2 is a perspective elevation of the front end of the central beam, showing notches in the upper and lower edges, respectively, as hereinafter described. Fig. 3 is a perspective view of one of the two notched hinge-plates above referred to. Fig. 4 is a side elevation of a section of the central beam and a cross-section of the hinge-plates thereon, taken directly at the side of the beam on line co m, Fig. 5. Fig. 5 is a cross-section of the main beam and a front elevation of the hingeplates thereon on a line corresponding substantially to y 1 Fig. 1.

The cultivator thus shown and described, so far as the central beam A and the two side beams B and B are concerned, and the means shown for adjusting the side beams, as Well as in other features not especially described, I do not claim as my invention; but what I do claim is the construction and combination of the hinge-plates C and their adaptation and arrangement to central beam A.

I am of course aware that in any broad sense it is not new at this time to employ what are known as hinge plates in this special relation, and such plates have been in use for a long time in varying forms of construction; but so far as I am aware there has never before been known a hinge-plate used in this position and relation which has accomplished what I accomplish by my invention. Usually heretofore plates of this general kind have been made out of malleable castings,with just a sufficient projection engaged on the central beam to prevent shifting sidewise or possibly end- Wise on the beam; but this failed entirely to accomplish the more important result of squaring the central beam and holding it with its sides in a true perpendicular plane absolutely, whereby also a fixed vertical axis is afforded for pivoting the side bars or beams B. By my invention I force the central beam to hold a true right angle With the hinge or hingeplates and makes the implement stand plumb and even though the material in the central beam is not of itself a true right angle on its edge, as often is the case, because the rollingmills do not always produce these bars or beams with their edges at a true right angle to their sides. By my construction and arrangement of hinge-plates this frequent defect in the central bar or beam is overcome and the hinge sets upon said bar or beam at a true right angle to its side in spite of such defects and can occupy no other relation,because its governing-notches are at a true right angle to its sides. To accomplish this very desirable result, 1 form the central beam with notches 2 and 3 in its upper and lower edges, respectively, adapted each to be engaged by a notch 4 in flange 5 of hinge-plates C and C, and said notches 3 and 4 are in different lines transversely of said beam. It may be understood here that the hinge-plates (marked C and O in Figs. 4 and 5) are sepa rately designated for convenience of reference simply, but are exactly alike in construction and interchangeablein use. Adescription of one therefore answers for both and the same reference letters or figures are used for both, excepting in the primary designation. At their other edges the said plates have flanges 6, provided each with a notch 7 its fulldepth. It will be noticed that notch 4 is only about one-half the depth of flange 5, and the two notches 5 and 6 are opposite each other transversely. Hence when the said plates are placed in position across the central beam the fastening-notches 4 of each enter the notches 2 and 3, respectively, of said beam, while the deep alining-notches 7 each come opposite to notches 2 and 3 in the beam. The bolts 9, one upon each side, serve to fasten plates and O rigidly and permanently upon the central beam, and other bolts 8, through the end of said plates, serve as pivots or hinges for side beams B.

The plates 0 C are preferably cut from sheet metal and formed into the desired shape in suitable dies in successive operations, and when the said plates are bolted down they square the bar A to a perfect right angle in respect to said plates, the shallow notches being such as to lock on beam A both laterally and lengthwise and prevent possible shifting on the beam in any direction, while the longer notches or slots 7 serve to enforce and maintain the square or right-angled relation of the bars already described by reason of their parallel perpendicular walls engaging the sides of the beam firmly between them. Both flanges 6 are comparatively deep, and as the notches 7 therein come in from opposite edges the two overlap toward the center with a depth which largely closes across the beam, as seen in Fig. 5. The elfect of this construction is to square the central bar to the hinge-plates, as already stated; but it also brings the holes for both pivot-bolts of the side bars directly in vertical line one with the other, so that the said bolts themselves are brought to an exact perpendicular position and cause the side bars to stand in true vertical lines with the center bars. It will also be observed that owing to the shape of these plates they are exceedingly strong, though comparatively light in metal, and their flanges have such depth and strength as to effectually embrace and hold the central beam laterally against all danger of breakage, especially when the parts are bolted into place.

What I claim is- 1. A cultivator having a central flat-sided straight-edged beam with notches in its edges top and bottom out of line transversely with each other, and a pair of hinge-plates having right-angled flanges with notches engaged in the notches of said beam and embracing the sides of the beam, substantially as described.

2. In cultivators, hinge-plates having fiat top and bottom surfaces and right-angled flanges along their inner edges, one of said flanges on each plate having a notch its full depth and. the other flange havinga notch of less than full depth and the walls of said notches at right angles to the plane of the plates, and a beam having notches in its edge with which said plates are engaged, substantially as described.

Witness my hand to the foregoing specification this 17th day of July, 1901.

ELIAS HAIMAN.

Witnesses:

R. B. MOSER, H. E. MUnRA. 

